HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s.

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Presentation transcript:

HMI MDI Comparison Y. Liu

CR 2104

CR 2109

MDI = 1.2 * HMI 720s / 45s

Mean Field

HMI Magnetic Field Noise Pattern Gaussian with of magnetograms

MDI Magnetic Field Noise Pattern MDI has pronounced spatial noise pattern

HMI & MDI Doppler/Magnetic Leakage

Synoptic HMI/MDI Noise Comparison vs Longitude

Average line-of-sight magnetic field versus sine latitude observed in HMI synoptic map

Synoptic / Synchronic Features are stretched far from reference

Time-of-Day Variation - 01 UT and 13 UT